JPH0588210U - Suppressor for no-till paddy work machine - Google Patents

Abstract

(57) [Abstract] [Purpose] Even with a single compression roller, the planting groove side is lightly compressed to a moderate hardness and height, and the fertilization groove side is strongly compressed to ensure that the groove is backfilled. An object of the present invention is to provide a pressure suppression device for a no-tillage paddy working machine that prevents the flow of fertilizer. [Structure] In front of the planting rod 4, a grooved body 15 for forming the planting groove a is provided on the virtual extension line L of the planting rod in correspondence with each planting rod 4, and the rear outside of the grooved body 15 is provided. A fertilization groove forming groove body 36 is provided at a position close to one side, and a fertilization groove b formed by the groove forming body 36 is provided so as to face the discharge port 11a of the fertilizer application device F. 4. A planting groove a between the planting position c by 4
Further, the pressure suppressing roller 41 for suppressing and leveling the fertilization groove b is arranged, and the pressure suppressing roller is configured as a stepped roller having the large diameter portion 41a on the fertilization groove b side and the small diameter portion 41b on the planting groove a side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a squeezing device for a no-till paddy working machine that cultivates a field (paddy field) and transplants seedlings without scratching.

[0002]

[Prior Art]

 The conventional rice cultivation work system (cultivation-scraping-planting) is a whole field work that plowing and scraping the entire field, and also uses a tiller and a tractor to perform plowing and scraping. Since then, we are planting with a rice planter, and at least we need a machine for tilling / substituting and a machine for planting. Since the seedlings are planted after waiting, it takes a lot of time and labor for the field maintenance work, which inevitably results in high costs.

[0003] Therefore, various types of no-tillage cultivation methods and no-tillage transplanters for transplanting seedlings into paddy fields that have not been tilled have been researched and developed. Attempts have been made to apply lateral fertilizer and have been proposed (JP-A-2-200125, JP-A-2-137811, JP-A-2-137812, JP-A-3-168005, JP-A-4-41121). etc).

[0004]

[Problems to be solved by the device]

 By the way, in order to apply lateral row fertilization at the same time as transplanting seedlings into non-tillage paddy fields, since the soil is hard in non-tillage dry fields, seedlings cannot be planted or fertilized in the soil as they are. Before planting seedlings, it is necessary to make planting grooves and fertilizer grooves. However, when making a planting ditch, the soil rises around the ditch and its surroundings disturbs the paddy field at the planting site, which disturbs the planting posture of the seedlings, resulting in poor planting accuracy. There is an inconvenience. In addition, even if fertilizer is applied in the fertilizer application groove, the fertilizer is washed away from the upper open part, which not only impairs the fertilizing effect as side-row fertilizer application but also pollutes the surrounding environment due to the runoff of fertilizer, which causes pollution. There are problems such as the cause.

[0005]

[Means for Solving the Problems]

 The no-tillage paddy work machine according to the present invention was created to solve the above-mentioned problems, and a virtual extension of a planting rod is provided in front of the planting rod so as to correspond to each planting rod. A groove cutting body for forming a planting groove is provided on the line, and a fertilization groove body for forming a fertilization groove is provided at a position rearward and outward of the groove cutting body. Of the planting groove and the planting rod, and a pressure suppression roller that controls the leveling of the planting groove and the fertilization groove is installed between the groove and the planting rod. The gist of the present invention is that the diameter portion is a stepped roller having a small diameter portion on the planting groove side.

[0006]

[Action]

 According to the present invention, prior to the planting of seedlings, the small diameter part of the stepped repression roller lightly represses the planting groove on the side of the planting groove so that the planting groove is leveled without being unnecessarily crushed. Therefore, the seedlings are surely planted in the planting groove in a proper posture. In addition, the large diameter part of the crushing roller strongly crushes the fertilizer application groove after application, so that the fertilizer application groove is reliably filled and the fertilizer is prevented from flowing away.

[0007]

【Example】

 The structure of the present invention will be described below with reference to an embodiment shown in the drawings. A is a rear part provided with a raising / lowering link 1 composed of an upper link 1a and a lower link 1b, a seedling stand 2, a drive case 3, a planter case 3a, and a planting case. This is a 6-row planting rice transplanter in which a planting part B consisting of a stick 4 and a float 5 is detachably mounted, and has front wheels 6 and rear wheels 7, a fertilizer tank 8 and a fertilizer pump P. A fertilizer application device F for fluidized fertilizer (paste fertilizer) including a suction hose 9, a discharge hose 9a, etc. is provided, and the fertilizer nozzle 11 connected to the tip of the discharge hose 10 discharges from the discharge port 11a in parallel with planting. Lateral fertilizer is applied. Reference numeral 12 is a transmission shaft to the planting portion B, 13 is a planting clutch lever, and 14 is a ratchet clutch lever.

Reference numeral 15 is a grooved body for forming a planting groove a, which is provided on the virtual extension line L of the planting rod in front of the planting rod 4 so as to correspond to each planting rod 4. It has a star-shaped disk shape having a facing blade portion 15a and integrally provided grounding flange portions 15b on both left and right sides. Is fixed to a shaft 19 which is swingably supported within a predetermined range through a rolling fulcrum mounting portion 17 and left and right support arms 18, and is configured to integrally rotate with the shaft 19 in a direction of an arrow in FIG. Has been done. The power is introduced from the propeller shaft 20 on the side of the main unit A by chain transmission into the transmission case 22 integrated with the rear wheel shaft case 21, and further from the PTO shaft 23 via the universal joint shaft 24 and the gear case 25 to the shaft 19 and the groove. It is adapted to be transmitted to the cut body 15. 23 'is a PTO clutch lever. The groove width of the groove cutting body 15 is substantially the same as the outer width of the seedling holding portion of the planting rod 4.

As shown in FIGS. 7 and 8, a PTO clutch 26 that automatically connects and disconnects with the PTO shaft 23 in association with the vertical movement of the seedling placing table 2 to drive or stop the rotation of the grooving body 15. Can be provided. That is, the PTO shaft 23 has a two-part structure in which it is connected via the PTO clutch 26, and when the seedling placing table 2 is lowered, it is biased toward the clutch engagement side by the spring 27 and raises the seedling placing table 2. The wire 28 fixed to the lower link 1b is pulled, and the shifter 29 is rotated by this, and the PTO clutch 26 is disengaged. With this, there is room for forgetting to disengage the PTO clutch lever 30 when traveling on the road. In addition, the safety is further improved, and it is prevented that the bending angle of the universal joint shaft 24 becomes large and the power transmission becomes difficult when the seedling table 2 is raised while the groove cutting body 15 is driven.

By the way, since the gear case 25 is only connected to the machine body fixed side by the universal joint shaft 24, the gear case 25 itself also rotates around the shaft 19 by the reaction due to the forced rotation of the groove cutting body 15. Although it cannot be avoided, the rotation is prevented by a support 31 extending rearward from the rear wheel axle case 21 and capable of rotating left and right and rotating left and right. That is, the front end side of the bracket 33 is connected to the longitudinal hole 32a opened in the plate 32 fixed to the transmission case 22 through the pin 34 so as to be movable back and forth and vertically within the range of the longitudinal hole 32a. The other end of the support 31 whose one end is fitted to the pin 35 erected on the rear end side of the bracket 33 so as to be rotatable left and right is attached to the upper surface of the gear case 25. It is conceivable to attach a detent to the planted part B or to use a bracket to make a detent on the universal joint shaft 24, but in the former case, when the planted part B rises, the joint angle of the natural joint shaft 24 is increased. And the smooth transmission is hindered, and in the latter case, when the grooved body 15 is subjected to an impact load, the universal joint shaft 24 may be damaged or deformed.

By the way, at the positions on the outer sides of the rear side of the respective groove cutting bodies 15, which are located in front of the planting rods 4, the respective grooved bodies 36 for forming the fertilizer application grooves b and the fertilizer application nozzles 11 for the side row fertilizer application are provided. It is installed along the left and right sides of the. In the present embodiment, a plate 39 having a front end edge welded with a fertilizer application nozzle 11 is fixed with bolts 40 and 40a to a bracket 38 fixed to a pipe stay 16 with a mounting bracket 37, and a disc-shaped groove is formed on the plate 39. The body 36 is rotatably supported.

The grooving body 36 has its front side lapped on the rear side of the grooving body 15 in a side view, and the grooving body 36 is arranged as close as possible to the grooving body 15 in the front-rear direction. It is said that. For this reason, a sufficient space is provided between the grooving body 36 and the planting position c by the planting rod 4, so that a sufficient space for mounting a compression roller, which will be described later, is secured. Further, the grooving body 36 is inclined in the front-rear direction and the left-right direction by a predetermined angle in order to enhance the soil burying effect on the passage mark side of the grooving body 15 and to secure the passage groove space of the fertilizer application nozzle 11. It is supported by. The fertilizer application position is not necessarily limited to the vicinity of the groove making body 36 as in the present embodiment as long as it is after forming the fertilizing groove b by the groove making body 36 and before crushing by the crushing roller described later. Although the inclination angle of the groove body 36 can be set arbitrarily, it can be adjusted by interposing an angle adjusting spacer (not shown) between the bracket 38 and the plate 39. Further, the groove body 36 may be not only the rotary disk type as in the present embodiment but also a fixed type composed of a plate or a block.

Reference numeral 41 is a planting groove a formed by the groove cutting body 15, a fertilization groove b formed by the groove forming body 36, and a pressure suppressing roller for suppressing and leveling the periphery of these grooves. This pressure suppressing roller 41 is a groove forming groove. It is rotatably disposed between the body 36 and a planting position (the lowermost end portion of the rotation locus R of the planting rod 4) c by the planting rod 4, and its specific mounting structure is as follows. It has become like this. That is, the base end portion of the arm 43 having a roller shaft 42 rotatably supporting the compression roller 41 at the tip thereof is fastened together by the bolts 40 and 40a between the groove mounting body mounting bracket 38 and the plate 39. The bolt hole 43a of the upper bolt 40 is formed in an arc-shaped elongated hole centered on the lower bolt 40a. As a result, the height of each compression roller 41 can be adjusted by itself within the range of the long hole, so that a detailed compression and leveling operation can be performed according to the field. The roller width of the crushing roller 41 is set to such a size that it can crush the grooves a and b and the paddy fields around the grooves a and b at the same time across the planting groove a and the fertilizing groove b.

The compression roller 41 is a stepped roller in which the fertilizing groove b side is the large diameter portion 41a and the planting groove a side is the small diameter portion 41b. Further, the discharge port 11a of the fertilizer application nozzle 11 is made to face a position corresponding to one end side of the large diameter portion 41a. The set position of the compression roller 41 is adjusted so that the lower surface of the large diameter portion 41a is the same as the bottom surface of the float 5 or slightly below the bottom surface of the float 5 when planting. It should be noted that the float 5 (which is publicly known and therefore not described) which acts as a sensor for automatic hydraulic control is set to have a low sensitivity because of no-till planting.

The fertilizer application device F includes not only liquid fertilizer d but also fertilizer that applies granular fertilizer. In the case of granular fertilizer application, instead of the fertilizer application nozzle 11, a drop guide or the like for granular fertilizer is provided.

In the above-mentioned configuration, when planting, water is put in advance in the dry paddy field and the paddy field is softened to some extent to perform the work. Now, when the PTO clutch lever 23 'is operated to the clutch-engaged side to turn on the PTO clutch and the planting section B is started to advance the machine body, the respective groove cutting bodies 15 are respectively indicated by arrows in FIG. Since the soil rotates forcibly in the direction, the soil corresponding to the planting position c is tilled within the width of the trench. For this reason, the soil in the planting groove a formed by the groove cut body 15 rises while softening and becomes slightly higher than the surrounding paddy field. Then, a fertilization groove b is formed on the soil on the side of the planting groove a by the subsequent fertilization groove forming groove body 36, and the fertilization is applied from the discharge port 11a of the fertilization nozzle 11 into the fertilization groove b. . Next, since the planting groove a, the fertilizing groove b, and the paddy field around these grooves are suppressed by the ground rotation of the compression roller 41, the soil that rises around the planting groove a and is disturbed is leveled. At the same time, the fertilization groove b after fertilization is crushed and the fertilizer d is enclosed in the soil of a predetermined depth. Then, the seedlings f, which are separately sandwiched from the seedling mounting table 2 by the subsequent planting rods 4, are planted continuously in the grounded planting grooves a.

By the way, since the compression roller 41 has the small diameter portion 41b on the side of the planting groove a and the large diameter portion 41a on the side of the fertilization groove b, the side of the planting groove a is lightly compressed by the small diameter portion 41b. Further, since the fertilization groove b side is strongly suppressed by the large diameter portion 41a, the degree of pressure suppression is accurate even though it is the single pressure suppression roller 41. Therefore, the planting groove a part side is moderately hard without being crushed more than necessary due to excessive repression (it does not become so hard because the soil that has been grooved once by the disk-shaped grooving member 15 has been softened to some extent). Since the soil is leveled to the height, the planting of the seedling f can be performed accurately without disturbing the planting posture. Further, the groove backfilling action on the fertilizer application groove b side is surely performed with the upper open portion of the groove b being closed without causing pressure relief, and as a result, the fertilizer d is applied to the soil of a predetermined depth. Since it is enclosed, the fertilizer does not flow out after fertilization (see FIG. 12 showing the pressure suppression state of the stepped roller and FIG. 13 showing the pressure suppression state of the stepless roller as a comparative example).

By the way, when the fertilization groove b is formed by the grooving body 36, the sloped surface of the grooving body 36 causes the soil to move toward one side outward (cultivation soil direction), so that one shoulder of the fertilization groove b is Although it is easy to rise due to the gathered soil, the discharge port 11a of the fertilizer application nozzle 11 faces the position corresponding to the one end edge side of the roller large diameter portion 41a (the soil side pushed by the grooving body 36). Since the soil that has been applied to the shoulder on one side of the fertilization groove b is strongly collapsed into the groove b by the large roller diameter portion 41a, the groove b after fertilization is easily closed. (When the nozzle discharge port 11a is set near the center of the compression width, the roller 41 must be pressed considerably strongly against the rice field in order to fill the fertilization groove b).

[0019]

[Effect of the device]

 Since the present invention is configured as described above, even though it is a single compression roller, the planting groove side is lightly compressed and the fertilization groove side is strongly suppressed. While the soil is leveled to a suitable hardness and height without being crushed more than necessary due to excessive suppression, it also has the effect of preventing the flow of fertilizer because the groove backfilling action on the fertilizer application side is reliably performed.

[Brief description of drawings]

FIG. 1 is a side view of a riding rice transplanter equipped with the present invention.

FIG. 2 is a side view of a planting groove portion.

FIG. 3 is a front view of a groove portion.

FIG. 4 is a perspective view showing an attachment structure of a fertilizer application groove forming groove body and a compression roller.

FIG. 5 is a perspective view of a height adjusting unit of the compression roller.

FIG. 6 is a schematic plan view of a groove forming portion and a compression roller portion.

FIG. 7 is an explanatory view of the action of the PTO clutch when the seedling table is lowered.

FIG. 8 is an explanatory view of the action of the PTO clutch when raising the seedling placing table.

FIG. 9 is a side view of the periphery of the PTO shaft showing the rotation preventing structure of the gear case.

FIG. 10 is a plan view of the periphery of the PTO shaft showing the rotation preventing structure of the gear case.

FIG. 11 is a front view of a transmission case.

FIG. 12 is a diagram for explaining the action of the compression roller.

FIG. 13 is an explanatory view of the operation of the stepless compression roller (comparative example of the present invention).

FIG. 14 is an operation explanatory view showing a state in which weeds are laid down by the compression roller.

[Explanation of symbols]

 4 Planting Rod 11 Fertilizer Nozzle 11a Fertilizer Nozzle Discharge Port 15 Grooving Body for Planting Groove Forming 36 Grooving Body for Fertilizer Groove Forming 41 Squeezing Roller 41a Large Diameter Part of Squeezing Roller 41b Small Diameter Part of Squeezing Roller L Planting Virtual extension line of additional article a Planting groove b Fertilization groove c Planting position d Fertilizer f Seedling

Claims (2)

[Scope of utility model registration request] 1. A groove cut body for forming a groove for planting is provided on the virtual extension line of the planting rod in front of the planting rod so as to correspond to each planting rod, and at a position rearward and outward of the grooved body. A fertilizer groove for forming a fertilizer groove is provided, and a fertilizer groove formed by the fertilizer groove is provided so that a discharge port of the fertilizer application is faced to the fertilizer groove. A non-tillage characterized by arranging a pressure suppressing roller for controlling and leveling the applying groove and the fertilizing groove, and configuring the suppressing roller as a stepped roller having a large diameter part on the fertilizing groove side and a small diameter part on the planting groove side Suppressor for paddy work machines. 2. The pressure suppressing device for a no-tillage paddy working machine according to claim 1, wherein the discharge port of the fertilizer applying device faces a position corresponding to one end edge side of the large diameter portion of the pressure suppressing roller.